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作 者:李永生[1,2] 王棣[1,2] 刘劲 史敏华[1,2] 张云龙 谢英杰[1,2]
机构地区:[1]山西省林业科学研究所 [2]山西省造林局
出 处:《东北林业大学学报》1998年第1期8-13,共6页Journal of Northeast Forestry University
基 金:国家"八五"科技攻关专题
摘 要:利用236块野外标准地资料,运用数量化理论Ⅰ及广义方差分析方法,确定了土层厚度、海拔、坡向为影响林木生长的主导立地因子。3个主导因子共构成60个立地类型。参照石灰岩山地油松、侧柏、刺槐等树种立地划分研究结果,将60个立地类型中的35个划为适于用材林的立地类型,剩余25个为水保林的立地类型,利用最优分割法,将25个水保林立地类型划分为3个立地类型组,并对每个立地类型组的立地特点及生产力做了评价。The division of site types were studied with data from 236 sample plots on forest of soil and water conservation in calcareous mountain areas, Shanxi province Soil depth, elevation and slop direction were decided as the main site factors of forest growth by using quantitative theory I and general diviation 60 combined sites were constituted by the main site factors, among which, 35 combined sites were classified as the sites suitable for timber forest by referring to classification of site types on the Chinese pine, oriental arborvitae and locust in the same areas, the remaining 25 sites as the sites of water and soil conservation forest The 25 combined site types were divided into 3 groups of site types using the optimization division method The characteristic and productive capacity of each group were appraised
分 类 号:S727.22[农业科学—林木遗传育种]
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